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Signatures of extra dimensions in gravitational waves

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Published 23 June 2017 © 2017 IOP Publishing Ltd and Sissa Medialab
, , Citation David Andriot and Gustavo Lucena Gómez JCAP06(2017)048 DOI 10.1088/1475-7516/2017/06/048

This article is corrected by JCAP05(2019)E01

1475-7516/2017/06/048

Abstract

Considering gravitational waves propagating on the most general 4+N-dimensional space-time, we investigate the effects due to the N extra dimensions on the four-dimensional waves. All wave equations are derived in general and discussed. On Minkowski4 times an arbitrary Ricci-flat compact manifold, we find: a massless wave with an additional polarization, the breathing mode, and extra waves with high frequencies fixed by Kaluza-Klein masses. We discuss whether these two effects could be observed.

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10.1088/1475-7516/2017/06/048